Infectious Diseases

Definition Interstitial cystitis or bladder pain syndrome (IC/BPS), the lining of the bladder is constantly irritated, causing pain during urination and urinary frequency. It is not certain why individuals have IC/BPS, but it is thought to be due to chronic inflammation of the bladder, possibly from defects in the inside …

Definition Septic bursitis (infectious bursitis) is an infection of the bursae, the small sacs of fluid that cushion and lubricate an area where tissues-including bone, tendon, ligament, muscle, or skin-rub against one another. Common sites of septic bursitis are the tips of the elbows and the kneecaps. People who repeat …

Introduction The pelvic inflammatory disease is the inflammation of female reproductive organs such as the uterus, ovaries, cervix, endometrium, and the fallopian tubes, due to the infection of sexually transmitted bacteria. Sometimes it also caused by the normal bacteria present in the vagina. This bacterium enters via the vagina and …

Definition “Vaginitis” is a medical term used to describe various disorders that cause infection or inflammation of the vagina. Vulvovaginitis refers to inflammation of both the vagina and vulva (the external female genitals). These conditions can result from an infection caused by organisms such as bacteria, yeast, or viruses. In …

Definition Tularemia is a rare infectious disease that typically attacks the skin, eyes, lymph nodes and lungs. Tularemia also called rabbit fever or deer fly fever is caused by the bacterium Francisella tularensis. The disease mainly affects mammals, especially rodents, rabbits and hares, although it can also infect birds, sheep, …

Definition Psittacosis is an uncommon infectious disease that is most often transmitted to humans through exposure to infected birds, especially parrots, cockatiels, parakeets and similar pet birds. Psittacosis can affect the lungs and may cause inflammatory illness of the lungs (pneumonia). Additional common symptoms include fever, muscle pain (myalgia), headaches, …

Definition Folliculitis barbae is the medical term for a common condition called barber’s itch; this condition is an infectious skin disease which arises on the bearded facial areas of people who are unlucky enough to contract the disease. The disease develops and the first signs of the condition are the …

Definition Whipworm (Trichuris trichiura) is an intestinal parasite of humans. The larvae and adult worms live in the intestine of humans and can cause intestinal disease. The name is derived from the worm’s distinctive whip-like shape. Whipworm lifecycle Whipworms have a simple life cycle. Whipworms passed in the feces, and …

Definition Cat-scratch disease is an infection you can get after a cat scratches, bites, or licks you. It is caused by bacteria in cat saliva. Cats likely get the bacteria from fleas. Cat-scratch disease is also called cat-scratch fever. It is not a severe illness in healthy people. But it …

Definition Hepatitis refers to an inflammatory condition of the liver. It’s commonly caused by a viral infection, but there are other possible causes of hepatitis. These include autoimmune hepatitis and hepatitis that occurs as a secondary result of medications, drugs, toxins, and alcohol. Autoimmune hepatitis is a disease that occurs …

Definition Head lice (Pediculus capitis) are small, wingless, egg laying insects found on the human head. They grow to about 3.5mm (the size of a sesame seed or pin head). Head lice live on the hair and feed by sucking blood from the scalp. They are pale grey in colour …

Introduction An ear infection (acute otitis media) is most often a bacterial or viral infection that affects the middle ear, the air-filled space behind the eardrum that contains the tiny vibrating bones of the ear. Children are more likely than adults to get ear infections. Ear infections frequently are painful …

Definition Infectious mononucleosis (mono) is often called the kissing disease. The virus that causes mono is transmitted through saliva, so you can get it through kissing, but you can also be exposed through a cough or sneeze, or by sharing a glass or food utensils with someone who has mono. …

Definition Nail fungus is a common condition that begins as a white or yellow spot under the tip of your fingernail or toenail. As the fungal infection goes deeper, nail fungus may cause your nail to discolor, thicken and crumble at the edge. It can affect several nails. Nail fungus …

Definition Strep throat is a bacterial infection that causes inflammation and pain in the throat. This common condition is caused by group A Streptococcus bacteria. Strep throat can affect children and adults of all ages. However, it’s especially common in children between the ages of 5 and 15. Sneezing and …

Definition Diphtheria is an infectious disease caused by the Corynebacterium species of bacteria and is most often associated with a sore throat, fever, and the development of an adherent membrane on the tonsils and/or nasopharynx. Severe infections can affect other organ systems such as the heart and the nervous system. …